Add destinations improvements

[gabriel-indik]

When sending a message or transferring a blob, the recipient ID can now contain an additional identifier. Also, the sender can be explicitly included which may also contain an additional identifier.

Example:
POST /api/v1/messages

Payload:

{
    "recipient": "org-b/ns-a",
    "sender": "org-a/ns-x",
    "message": "test 1-2-3"
}

Response:

{
    "requestId": "cee8e73e-4a97-4be7-abc8-f82de1e62939"
}

Sender receives event:

{
    "id": "58e7a4b8-046e-478b-a82c-daa9eb9aae01",
    "type": "message-delivered",
    "message": "test 1-2-3",
    "sender": "org-a/ns-y",
    "recipient": "org-b/ns-x",
    "requestId": "cee8e73e-4a97-4be7-abc8-f82de1e62939"
}

Recipient receives event:

{
    "id": "8d3351a8-bb83-4ce2-906d-4d099f8e2492",
    "type": "message-received",
    "sender": "org-a/ns-y",
    "recipient": "org-b/ns-x",
    "message": "test 1-2-3"
}

Similarly when transferring blobs:
POST /api/v1/transfers

Payload:

{
    "path": "/photo.jpg",
    "sender": "org-a/ns-x",
    "recipient": "org-b/ns-y"
}

Response:

{
    "requestId": "ba830d2c-dd39-48ce-ab70-dbfa610dc606"
}

Sender receives event:

{
    "id": "16354dfb-1644-404e-a23c-51dd62d0d5d9",
    "type": "blob-delivered",
    "path": "/photo.jpg",
    "sender": "org-a/ns-x",
    "recipient": "org-b/ns-y",
    "requestId": "ba830d2c-dd39-48ce-ab70-dbfa610dc606"
}

Recipient receives event:

{
    "id": "bb745fe8-8837-436f-9d20-315dc0da01a5",
    "type": "blob-received",
    "sender": "org-a/ns-x",
    "recipient": "org-b/ns-y",
    "path": "received/org-a/ns-x/photo.jpg",
    "hash": "9707a075644e450ebec9c87dfa3b79b53e51f878cfc0394b80c30949f4d2000c",
    "size": 146866,
    "lastUpdate": 1658437514514
}

Notice the folder structure, the file is stored in a subdirectory based on the additional identifier.
Note also that these changes are backward compatible as the additional identifiers are optional.

Also included in this PR:

• Updated certificates for development (original ones were expired)
• Headers updated (2021 -> 2022)

[awrichar]

Tested with changes in hyperledger/firefly#916 - looks good.